... is used for making SF series'external case,and PPO plastic material is used for SF series ... is used for making SFT series'external case and base. Both of which will not suffer deformity ... and 120 respectively.4) 3 phase 3 wire Measuring range: 100V, 150V, 200V, 250V, 400V, 500V. 5) 3-Position: L1-L2, L1-L3, L2 ... /400V 300/500V.7) 6-Position: L1-L2, L1-L3, L2-L3, L1-N, L2-N, L3-N(OFF Position is available ...